Rotational ball-guided voice coil motor
First Claim
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1. An actuator for rotating or tilting an optical path folding element (OPFE) that folds light from a first optical axis to a second optical axis, the actuator comprising:
- a) a first voice coil motor (VCM); and
b) a first curved ball-guided mechanism operative to create a rotation or tilt movement of the OPFE around a first rotation axis upon actuation by the VCM, and wherein the first ball-guided mechanism includes a first pair of arc-shaped grooves having a plurality of balls located therein forming a first curved ball-guided rail.
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Abstract
Actuators for rotating or tilting an optical element, for example an optical path folding element, comprising a voice coil motor (VCM) and a curved ball-guided mechanism operative to create a rotation or tilt movement of the optical element around a rotation axis upon actuation by the VCM. In some embodiments, an actuator includes two, first and second VCMs, and two curved ball-guided mechanisms operative to create rotation or tilt around respective first and second rotation axes.
266 Citations
27 Claims
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1. An actuator for rotating or tilting an optical path folding element (OPFE) that folds light from a first optical axis to a second optical axis, the actuator comprising:
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a) a first voice coil motor (VCM); and b) a first curved ball-guided mechanism operative to create a rotation or tilt movement of the OPFE around a first rotation axis upon actuation by the VCM, and wherein the first ball-guided mechanism includes a first pair of arc-shaped grooves having a plurality of balls located therein forming a first curved ball-guided rail. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification